Pariguayo is a popular Dominican slang term for a 'chump,' 'fool,' or someone who is trying too hard to be something they're not. It's derived from the English phrase "party watcher," referring to someone who just stands around at a party instead of participating.
In the song, the artist dismisses his ex-lover's new boyfriend by calling him 'ese pariguayo' (that chump), implying the new guy is lame and no competition. It's a perfect example of colorful, regional slang that adds a layer of attitude to the lyrics.
Dominican rapper Lil Naay brings pure street confidence to "Perfect", a track where he refuses to let an ex move on. She might be with someone new, but Naay writes off the new boyfriend as a "pariguayo" (a Dominican slang term for a goofy, gullible, or harmless guy) and warns that having another man "no corre" ("doesn't fly"). Backed by heavy trap energy, he brags that she still secretly prefers a genuine bad boy like him, boldly claiming "Tú sabes que soy tu malo, mami, no te hagas" ("You know I'm your bad boy, baby, stop pretending"). He treats her current relationship as a joke and even threatens violence against the rival, declaring "A mí me da lo mismo llenarlo de balas" ("It makes no difference to me to fill him with bullets").
The lyrics are explicit, cocky, and totally blunt. Naay hypes her up as a top-tier "Barbie", repeating the hook "Ese culo está perfect, botando lava" ("That ass is perfect, spilling lava"), while insisting she does not look as happy now as she did when they were together. He fantasizes about taking her out by the ocean—"Yo quisiera darte frente al mar, yo fumando, ella bebiendo alcohol" ("I'd like to hit it by the sea, me smoking, her drinking alcohol")—while pulling up to the club in designer clothes with extended 30-round clips ("el peine 30"). It is an intense, boastful anthem built on rivalry, ego, and refusing to step aside.